SATA Interface Power Mode Selection Dynamics

Solution Overview

Problem

Existing SATA power management methods are limited in their ability to adaptively select a power saving mode based on system requirements, often prioritizing either power consumption reduction or wake-up response, but not both simultaneously.

Innovation Solution

A method for controlling power saving modes in a SATA interface that allows adaptive selection of power saving modes, including partial, slumber, and a user-defined mode, based on control signals to optimize power saving and wake-up response independently of requested modes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If the slumber mode is selected to maximize power saving, then power consumption is reduced, but wake-up response time increases to 10ms

Engineering Contradiction:

Improvepower consumptionVSAvoidwake-up response time

Core Design Contradiction:

Use of energy by moving objectVSLoss of time

Solution Approach 1:

The patent implements dynamic power management by allowing the SATA interface to transition between multiple power saving modes (slumber mode with 10ms wake-up time and partial mode with 10us wake-up time) based on system requirements. The host or device can selectively request different power modes, and the system adapts its power consumption and wake-up characteristics dynamically rather than being fixed in one state.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the operational parameters of the SATA interface by introducing a third power saving mode that modifies the wake-up time parameter to 5ms, positioned between the slumber mode (10ms) and partial mode (10us). This parameter adjustment allows the system to optimize the trade-off between power consumption and wake-up response time by selecting the appropriate mode based on current needs.

Inventive Principle:

Principle #35Parameter changes

2Speed

If the partial mode is selected for faster wake-up response, then wake-up time is reduced to 10us, but power saving capability is reduced compared to slumber mode

Engineering Contradiction:

Improvewake-up response speedVSAvoidpower consumption

Core Design Contradiction:

SpeedVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic power management by allowing the SATA interface to transition between multiple power saving modes (slumber mode with 10ms wake-up time and partial mode with 10us wake-up time) based on system requirements. The host or device can selectively request different power modes, and the system adapts its power consumption and wake-up characteristics dynamically rather than being fixed in one state.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the operational parameters of the SATA interface by introducing a third power saving mode that modifies the wake-up time parameter to 5ms, positioned between the slumber mode (10ms) and partial mode (10us). This parameter adjustment allows the system to optimize the trade-off between power consumption and wake-up response time by selecting the appropriate mode based on current needs.

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If only standard power saving modes are supported, then protocol compatibility is maintained, but adaptability to different system requirements is limited

Engineering Contradiction:

Improvepower mode selection flexibilityVSAvoidprotocol complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies universality by making the SATA interface capable of supporting multiple power saving modes (slumber mode, partial mode, and the new 5ms wake-up mode) within a single protocol framework. The interface can universally handle different power mode requests from either the host or device, making the system multi-functional in terms of power management while maintaining protocol compatibility.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent implements dynamic power management by allowing the SATA interface to transition between multiple power saving modes (slumber mode with 10ms wake-up time and partial mode with 10us wake-up time) based on system requirements. The host or device can selectively request different power modes, and the system adapts its power consumption and wake-up characteristics dynamically rather than being fixed in one state.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS8200998B2Method of controlling power saving mode used in SATA interface

Publication Date: 2012.06.12 SAMSUNG ELECTRONICS CO LTD

AI summary

A method of controlling a power saving mode used in a serial advanced technology attachment (SATA) interface. The method of controlling a power saving mode used in a SATA interface for data transmission between a transmitter and a receiver includes: requesting the receiver to enter one of a plurality of power saving modes in a SATA protocol using the transmitter; and selecting one of the power saving modes using the receiver. In the method of controlling a power saving mode in a SATA interface, since a power saving mode can be selected independently of a power saving mode requested by a transmitter, a system can operate in a power saving mode that is suitable for the required properties of the system in accordance with a SATA protocol. Furthermore, the properties of the system required by a user can be realized by selecting a user-defined power saving mode.